JPH02175108A - Apparatus for making regenerated material from synthetic material - Google Patents

Abstract

PURPOSE: To alter a synthetic material to a recycled material of a synthetic material at an advantageous cost by discharging chips of the compressed and heated synthetic material from a press through a holes disc. CONSTITUTION: When chips 12 of the synthetic material are supplied via a hopper 18, it is heated by a heater 19, then prepressurized by a drive screw supply unit 11 by a motor, a cylinder 20 is transported to a connecting port 24, and dropped into a space under the cylinder 20. The chips 12 of the material existing in a cylinder space 34 are compressed by moving a piston 21 downward, and simultaneously heated by heaters 23, 14. The chips 12 of the compressed and plasticized material are guided to a holed disc 15 via a conically converged part 28 and extruded. Individual strings of the recycled material 16 of the extruded synthetic material are cut to a suitable predetermined length by a cutter 25 according to the demand and its use.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for producing recycled materials of synthetic materials.

[Prior art]

For example, when manufacturing small parts such as switch pumps, switches and various other accessories used in the construction of automobiles in large quantities, for example using the known synthetic material injection molding process, A significant portion of synthetic materials becomes waste, and this waste is essentially a valuable raw material. Traditionally, this material was considered waste and was either piled up as garbage or incinerated.

However, large parts of automobiles, such as the bumpers attached to the front and rear of the car, are gradually being made of synthetic materials instead of metal.These parts are usually made of synthetic materials. Unlike car bodies, which are made of metal materials, they do not naturally corrode or wear out due to surrounding conditions, and generally remain unchanged throughout the life of the car.

However, such large components made of synthetic materials originating from the automotive industry, as well as other objects originating from other types of industry, present one important problem that must be taken into account.

In principle, both the waste produced during the production of objects made of synthetic materials and the objects themselves, which are made of synthetic materials and are no longer in use, are important, although hitherto underutilized, raw materials. This is because, firstly, the need for reuse was not recognized and, secondly, there were no suitable methods and equipment capable of converting waste synthetic materials into a reusable form. .

[Problem to be solved by the invention]

The object of the invention is to create an apparatus which is capable of converting waste materials of synthetic materials into a form which can be revalued indefinitely as a raw material for synthetic materials at advantageous cost and which is simple in structure, easy to form and can be produced at advantageous cost. The goal is to provide the following.

[i! Means, action and effect for solving the problem] The above problem is achieved by the present invention by one device that supplies waste from the synthesis port U to one press device and a heating device that heats this press device, In this pressing device, the waste material t4 can be compressed, and the compressed waste material t4 is discharged from the press device through a perforated disk as recycled material t4 material.

A feature of the device according to the invention is that, as a first step to reduce the volume of the synthetic +41'r waste, it is possible in principle to be preliminarily crushed into small pieces by means of a feeding device, and then to The waste material is once again compressed further by suitable compaction and the compressed waste material can then be forced out as the toughness of the individual component lJ through one perforated disk. These synthetic material strings can be further processed as recycled synthetic materials that can be used as raw materials.

According to one advantageous embodiment of the invention, the feeding device is constructed in the manner of a driven screw feeding device and has a hopper for feeding the waste synthetic material. This hopper is located approximately at right angles to the axis of rotation of the screw feeder and is thus inserted into the popper. If necessary, the synthetic material waste, which has been previously taken and mechanically crushed into pieces of suitable size, can be picked up by a screw feeding device, prestressed and fed to the next pressing device.

Scrap pieces of synthetic material, which at normal temperatures can be quite hard depending on the material, can be better preloaded and fed by the screw feeding device if fed via the hopper In order to do this, in an advantageous embodiment of the device according to the invention, the feeding device has a heating device which applies heat to the device itself, which heating device can e.g. It is possible to be placed.

The press device itself consists of a cylinder and a piston moving within it, thus allowing the prestressed composite material t4 waste fed from the screw feed device to be further compressed.

Pressure of the synthetic material waste in the press equipment is carried out at the following (r).
A single Jf force medium is moved in the direction of the perforated disc, the pressure medium being a gaseous body, for example air, or a fluid such as water. It is furthermore conceivable that the piston can be moved in the direction of the flowering disc and in the opposite direction by means of a suitable screw connected thereto.

When actuating the piston with a pressure medium, the piston can be moved, in particular under the action of a spring, into an end position opposite the perforated disk, or alternatively, after the pressing operation has ended, the piston can be It is also conceivable that the waste of synthetic material is transferred to the starting or end position by means of a pressure medium injected into the space of the cylinder in which the compression took place.

In order to heat the cylinder and thus heat the synthetic material waste early and bring it into a state as plastic as possible in the subsequent press, the synthetic material is preloaded and possibly already heated by means of a screw feeder. After the waste (lk) has been sent out from the feeding device, a second heating device surrounds the press device, and this heating device (η is the supply bag; q is arranged in the area connected to the press device). 0 Such a configuration of the invention furthermore allows a similar heating of the cylinder parts used primarily in the final stages of pressing of scraps of synthetic material.

Finally, the device according to the invention preferably has a device for crushing the recycled material of synthetic material in the direction in which the recycled material of synthetic material in the lower part of the perforated disc is extruded, with the perforated disc being optionally The length of the string of synthetic material extruded from the plate can also be made arbitrarily adjustable in order to prepare or crush the length to suit a particular application.

Although it is advantageous in this case for the crushing device to ultimately be formed by a rotating cutting blade driven by a motor, it is pointed out that the crushing device can also be formed by any other suitable crushing mechanism. Ru.

〔Example〕

The invention will now be explained in more detail using the accompanying schematic drawing, which shows one embodiment.

The device 10 of the invention consists mainly of one feeding device 11 and one
It consists of two pressing devices 13 , the feeding device having a connection 24 through which the prestressed composite material scraps 12 enter the pressing device 13 .

In the embodiment shown here, the feeding device 11 essentially consists of a housing part formed on a cylinder cane, in which a known screw conveying device 17 rotating about an axis is installed. It is located. The screw transport device is driven in a known manner around its shaft by a motor, for example an electric motor, which is connected to the shaft. Screw transport device 17
A hopper 18 is mounted above the casing of the feeding device 11 approximately at right angles to the axis of rotation of the
Through this hopper, scraps 12 of synthetic material can be fed to a screw conveyor 17.

The press device 13 essentially consists of the already mentioned cylinder 20, to which the feed device 11 is connected approximately at right angles.
casing is connected.

A hole is provided at a suitable position on the side of the cylinder 20, which hole forms the connection port 24 of the feed device 11 already mentioned. The cylinder 20 has a closure member 27 in the form of a lid at its upper end when the cylinder 20 stands vertically as shown, and at its vertical lower end when the cylinder 20 is arranged as shown in this figure. The cylinder outer cylinder has a conically tapered part.0 The conically tapered part has 2 parts, and the part with the smallest diameter has a 1 part.
Two perforated disks 15 are mounted, which disks can for example be mounted interchangeably in this position.

A crushing device 25 is arranged substantially parallel to the perforated disk 15 at a distance in the direction in which the recycled material 16 of synthetic material is extruded from the device 10, this device having one motor,
For example, it is driven by an electric motor. The extent of the device 10 around the perforated disk 15 in the extended part of the cylinder 20 is formed by one tubular section 29, around the flange 30 at the end of this tubular section on the side from which the recycled material is extruded. Two cutting blades 26 rotate, which are driven by the motor of the crushing device 25.

A piston 21 is mounted and connected to the cylinder 20 so as to be able to move to and fro within the cylinder 20, i.e. vertically up and down in the case shown. 1 piston rod 3
1 through at least a portion of the cylinder 20 into the blocking member 27 of the cylinder 20. A pressure medium, such as a fluid such as gas or water, is applied to the first cylinder space 33 via one connection @32 provided on the blocking member 27;
The piston 21 thus moves in the direction of the arrow 35 against the force of the spring 22.
It is possible to move in the direction of When the supply of pressure medium to the first cylinder space is interrupted, the pressure medium present in the cylinder space is removed again via the connection end 32;
Piston 21 reaches a position vertically above cylinder 20 again under the force of spring 22.

Around the lower part of the cylinder 20 when it is oriented vertically there is a first heating device 14 and at a distance therefrom a second heating device 23, which heating devices are e.g. It is possible to surround the cylinder 20. The heating devices 14 and 23 can be electrically heated, for example, but it is also conceivable to use any other available heat, for example residual heat, for this purpose.

A heating device 19 similar to that described above is arranged around the lower part of the hopper 18 when the device IO is oriented vertically and is heated as before electrically or by other available energy.

When producing the recycled synthetic material 16, first the synthetic material waste 12 is fed via the hopper 18, where the synthetic material waste 12 has optionally been previously crushed mechanically or in any other way. , thus the synthetic material waste is transferred to the hopper 18
can be accommodated through. The synthetic material waste I2 fed by a heating device 19, which is optionally provided in the lower part of the hopper, is heated and then preloaded by a screw feeding device driven by a motor and into a connection 24 with a cylinder 20. be transported. The pre-compressed and heated scrap of synthetic material 12 is then transferred to the cylinder 2
0 into the space below and there it is further heated by the heating device 14, with a further heating device 23 being able to be provided in the vicinity of the connection, as already mentioned.

If there is a sufficient quantity of precompressed and heated synthetic material 12 in the lower part of the cylinder 20, the pressure medium will cause the piston 21 to be moved downwards in the direction of the arrow 35 and the second cylinder space 34, as described above. The synthetic material waste 12 present in the is compressed in a predetermined manner and at the same time is further heated by the heating devices 23 and 14. The compressed plastic waste 12 is guided into the perforated disk 15 via the conically tapered section 28 which connects to the cylinder 20 and is forced out. The individual strands of recycled material 16 of synthetic material extruded from the perforated disk 15 are then cut by a crushing device 25 into suitable lengths, depending on demand and intended use.

The cycle of supplying the synthetic material waste 12 to the device according to the invention and the cycle of compression by the piston 21 can be operated automatically in a suitable manner, so that in principle the device 10 according to the invention can be operated automatically as a whole. It is proposed that it is possible to be driven automatically.

Embodiments of the invention can be as follows.

(1) The feeding device (11) is designed in the manner of one driven screw conveyor (17) and has one hopper (18) for feeding the scraps (12) of synthetic material. 2. A device according to claim 1, characterized in that:

2. Device according to claim 1, characterized in that the feeding device (11) has a heating device (19) for heating the device.

(3) The press device (13) has one cylinder (20)
and one piston (21) moving inside this cylinder
3. A device according to claim 1 or claim 2, characterized in that it comprises:

(4) Device according to item 3, characterized in that the piston (21) is movable in the direction of the perforated disk (15) by means of a pressure medium.

(5) The piston (21) is capable of moving to the end position in the opposite direction to the perforated disc (15) by the action of the spring (22). Equipment L described in Section 4 (6) Press group! (13) is the second heating device (23)
and the heating device is arranged near a connection port (24) through which the supply device (work 1) connects to the press device (13), or any one of the first to third aspects Apparatus according to any one of clauses up to 5.

(7) Behind the perforated disc (15) in the direction in which the synthetic recycled material (16) is extruded, one device F (25) is provided for crushing the synthetic recycled material (16); 7. The device according to claim 1 or any one of claims 1 to 6, characterized in that:

(8) The device according to item 7, characterized in that the crushing device (25) is formed by one cutting blade (26) driven and rotated by a motor.

[Brief explanation of the drawings] Fig. 1 shows a cross-sectional view of an apparatus for producing recycled synthetic materials. In this figure, a heating device is arranged only in the press cylinder, and Fig. 1 shows an apparatus for producing materials, in which heating is additionally possible in the region where the synthetic material is fed to the supply device; FIG. 11... Supply bag W 12... Synthetic material scraps 13
...Press device 14...Heating device 15...Perforated disc 16...Recycled synthetic material 17...Screw conveying device 18...Hopper 19...Heating device 20...
Cylinder 21...Piston 22...Spring
23... Heating device 24... Connection port 25...
・Crushing device 26...cutting blade

Claims (1)

[Claims] (1) 1 capable of compressing synthetic material waste (12)
a heating device (14) for heating the pressing device (13) and one device (11) for feeding the scraps (12) of synthetic material; characterized in that the heated and heated synthetic material waste (12) is discharged from the press device (13) through one perforated disk (15) as recycled material (16) of synthetic material,
Equipment for making recycled synthetic materials.